Re: 10 MHz reference inputs
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Hi, ? Sanding Part Numbers off of ICs is a regular practice by many Car Alarm and some Car Audio vendors. ? Throw it away if traced to that part. ? ? McIntosh never did that but used House Part Numbers for Semiconductors and many other parts. Lots information available on McIntosh Parts, though. Worth fixing. ? ? Ross ?
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From: [email protected] < [email protected]> On Behalf Of Adrian Godwin Sent: Saturday, September 10, 2022 6:23 PM To: [email protected]Subject: Re: [Test Equipment Design & Construction] 10 MHz reference inputs ? I've never seen ics sanded on equipment from reputable manufacturers. It's always the marginal fly-by-nights. ? The IC numbers have been visible in every Extron DA that I've looked at. No reputable OEM removes common part numbers. Even if they did, there aren't that many ICs designed for this application. I remember the first IC designed for Video. It was introduced around 1988 and barely handled NTSC video. It was disappointing that the frequency response was so poor. I could have used a couple dozen at the TV station? where I was working in Engineering. On top of poor specs, I couldn't even buy a sample to test in our shop. The first video DAs that I worked on were early, discrete Grass Valley which were fully documented. All of the Extron DAs that I have came with a large clear label on the bottom with basic information on how to use them. ? Link to Extron manual:
There are plenty of these on Ebay.
For Michael A. Terrel, be aware that many US manufacturers sand the numbers off ICs and transistorls.
For Leon Robinson, given your opinion of politicians, which I agree with, you might like:
? [aka Lone star planet]
"Apparently, on New Texas, killing a politician wasn't regarded as?mallum in se, and was?mallum prohibitorum?only to the extent that what happened to the politician was in excess of what he deserved.?"
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